47450

Appears in sequences

• 4-dimensional pyramidal numbers: a(n) = (3*n+1)*binomial(n+2, 3)/4. Also Stirling2(n+2, n).at n=24A001296
• a(n) = sigma_6(n), the sum of the 6th powers of the divisors of n.at n=5A013954
• a(n) = sigma_n(n): sum of n-th powers of divisors of n.at n=5A023887
• Sum of n-th powers of divisors of 6.at n=6A034488
• Sum of cubes of unitary divisors of n.at n=35A034677
• Sum of sixth powers of unitary divisors.at n=5A034680
• Length of hypotenuse squared in right triangle formed by a prime spiral plotted in Cartesian coordinates.at n=36A048851
• sigma(n!,n!).at n=2A167369
• Sum of distinct nonzero sixth powers.at n=38A194769
• Sum of n-th powers of unitary divisors of n (d such that d divides n, gcd(d, n/d) = 1).at n=5A238981
• Triangle read by rows, T(n,m) = sigma_{n-m}(m) for n >= 1, m = 1,2, ..., n.at n=71A279394
• Square array A(n,k), n>=0, k>=1, read by antidiagonals, where row n is the sum of n-th powers of unitary divisors of k (divisors d such that gcd(d, k/d) = 1).at n=72A286880
• Square array A(n,k), n >= 1, k >= 0, read by antidiagonals: A(n,k) = Sum_{d|n} d^(n+k).at n=20A308504
• Square array A(n,k), n >= 1, k >= 0, read by antidiagonals, where A(n,k) is Sum_{d|n} d^(k*n).at n=26A308569
• Square array A(n,k), n >= 1, k >= 0, read by antidiagonals, where A(n,k) is Sum_{d|n} d^(d^k * n/d).at n=26A308676
• Square array sigma_k(n) read down antidiagonals: sum of the k-th powers of the divisors of n.at n=60A319278
• a(n) = n^n * Product_{p|n, p prime} (1 + 1/p^n).at n=5A320974
• a(n) = Sum_{d|n} mu(d)^2*d^n.at n=5A321236
• Number of integer partitions of n containing all prime indices of their parts.at n=49A324753
• a(n) = Sum_{d|n} mu(d)*mu(n/d)*d^n.at n=5A347251